<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="root">
      <p>{{ count }}</p>
      <button @click="count++">按钮</button>
    </div>
    <script src="./vue.js"></script>
    <script>
      debugger;

      new Vue({
        el: "#root",
        data() {
          return {
            count: 0,
          };
        },
      });
    </script>
  </body>
</html>
